Air-cooler.



C. F. MARTIN.

AIR COOLER.

APPLICATION IILBD 001:27, 190s.

Patented Apr. 27, 1909.

' tank, of whic CHARLES F. MARTIN, oF LITTLE ROCK, ARKANSAS.

AIR-cocina.

Specification of Letters Patent.

Patented April 27, 1909.

Application ld October 27, 1908. Serial No. 459,781.

To all whom 'it may concern:

Be it known that I, CHARLES F. MARTIN, a citizen of the United States, residing at Little Rock, in the county of Pulaski and State of Arkansas, have invented a new and useful Air-Cooler, of which the following is a specification. f

This invention relates to Ventilating sys tems, and more particularly to means for supplying cool fresh air to the interior of churches, theaters, hospitals, private dwellings and similar buildings.

The object of the invention is to provide a comparatively simple and highly eflicient apparatus by means of which the interior of a room or other inclosure may be thoroughly 'ventilated and maintained at a cool uniform temperature even in the hottest weather.

A further object is to provide an ap )aratus of the class described including a plurality of tanks, one of which is adapted to contain a cooling solution, preferably brine, and the other salted ice, there being a fresh air su ply )ipe communicating with the interior o the brine tank and a blast fan arranged in the supply pipe for forcing a current of air through both tanks before the same is delivered to the interior of the several rooms of a building.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and elliciency.

Further ob'ects and advantages willappear in the ollowing description, it being understood that various changesin form, proportions and minor details of construe tion may be resorted to within the scope 'of the ap )ended claims.

In the accompanying drawings forming a part of this specificationz-Figure 1 is a longitudinal sectional view of a cooling apparatus constructed in accordance with my invention. Fig. 2 is a top plan viewof the same. Fig. 3 is a detail top lan view of one of the conical screens and) its associated iarts.

l Similar numerals of reference indicate corresponding parts in all of the figures of the drawings.

The cooling apparatus forming the subject matter of the present invention includes a pair of tanks or receptacles 5 and 6, constituting, rcs mctivcly, a brine and an ice ii thc former is adapted to contain a saturated solution of salt and ice and be connected with the ordinary the latter a with salt.

Disposed within the brine tank 5 is an i11- verte U-s'haped ipe 7, one end of which extends throu h t e bottom of the tank for connection Wit a blast fan 8, while the other end of the pipe 7 rests on the bottom of Said tank with its terminal deiiected upwardly to form a discharge nozzle 9.

Extending vertically from the pipe 7 at the discharge nozzle 9 are one or more arms 10 which Serve to support a dished late or disk 11, the latter constituting a eflector and serving to distribute the air uniformly throu h the brine.

Eac tank or closure is provided with a removable cap or closure 12, preferably conical in shape, as shown, and to one of which is secured a pipe 13 leading from the interior of the brine tank 5 to the interior of the ice tank 6 the free end of the pipe 13 being extended downwardly within t e tank 6 for engagement with the bottom of said tank and having its terminal bent upwardly to form a discharge nozzle 14 similar in construction to the nozzle 9. A dish-shaped plate or deflector 15 is also secured to the pipe 13 in spaced relation to the discharge nozzle 14 for directing the air entering through said nozzle uniformly through the contents of the tank 6.

The defiectors 11 and 15 are housed within conical sha ed screens 16 each having its apex space( from the top of the adjacent deilector and its base provided with an annular rim 17 adapted to bear against the interior walls of the adjacent tank at the base thereof for centering the screen with respect to the deflectors and thereby preventing accidental displacement of the same. The screens 16 serve to prevent deposits of salt from accumulating around the discharge nozzles and alsooperate in a measure to relieve the delectors 11 and 15 from the weight of the ice or other contents of the tanks.

Extending from the cap or cover 12 of the tank 6 is a discharge pipe 18, one end of which communicates with the interior of said tank, while the other end thereof is extended to the interior of a house or other building to be supplied with cool air, it being preferred to provide a fan (not shown) in the pipe 18 for distributing the cool air in the several rooms of the building. lf desired, however, the discharge pipe 18 may eating pipes quantity of cube ice sprinkled of a building in summer and iu which event the cool air will be sup lied to the several rooms through the usua registers, it being of course understood that when such a means 5 is employed for distributing cool air in the room of a building that suitable vent openings Will be provided to permitthe exit of foul air from the room.

A motor 19 is arran ed on a suitable su port adjacent the tan s and is operative y connected through the mediumA of a belt 20 with the driving pulley 21 of the fan 8 so that the latter may be rotated to force a current of air through both tanks to the discharge pipe 18. If desired, a similar belt may be extended from the motor 19 to the fanin the.

pipe 18, above referred to, so that both fans l may be operated simultaneously.

A valve 22 is preferably `arranged in the supply pipe 23 for regulating the s eed of the air current delivered from the an and admitted to the interior of the brine tank, there being a waste cock 24 communicating with the interior of each tank at the bottom thereof for drawing oii the contents of the tanks when it is desired to clean the same.

In order to relieve the air of excessive moisture before same is delivered to a building, a screen 27 is laced in the cap or cover of the ice receptac e 6 and the space between said screen and the top of the cover filled with a quantity of crushed lime, indicated at 28.

The screen 27 is supported Within the ca 12 by a segmental retaining flange 29, which latter is detachably secured tothe interior walls of the ca so that the screen may be readily remove and the lime in the chamber or pocket replenished when necessary.

In operation the tanks 5 and 6' are filled with ice and' brine, respectively, by moving the sliding doors or closures 26 t0 o en osition after which said doors are close an the s motor 19 operated to .rotate the fan 8, the 45 quantity of air admitted to the interior of the brine tank being regulated by manipulating the valve 22. The air from the fan passes upwardly through one leg of the pipe 7, and thence downwardly through the other leg thereof and is discharged at the nozzle 9 the air being deilected u wardly throu h the contents of the tani; 5 and discarged through the ipe 13 and nozzle 14 into the ice tank 6. he air after enterin the tank 6 passes upwardly between the b ocks of ice 1n said tank and is discharged throu h the pipe 18 into the room, in the manner efore stated. The pipe 7 forms an air seal, while the screens 16 serve to 'prevent the entrance of foreign matter tothe discharge nozzles, said screens being provided with openings 26 to ermit the passage of the pipe 7 and 13, as s own.

Attention is here called to the fact that by $5 making the pipe 7 substantially U-shaped,

the air fi'fnthe fan receives an initial cooling before" bein discharged upwardly through the brinfw ile the lime in thetank 6 serves to relieve the air from excessive moisture before the same is discharged into the room to be cooled and ventilated. Moreover, by providin "a pipe 7 of the shape shown and, describe 'a very large surface is presented to the contents of theVv tank 5 and the temerature of the air thus greatly reduced beiore it is discharged into the salt solution, this resulting of course in a great saving of ice. 'Vhen the valve 22 is closed as when the Ablast fan is stopped, the pipe 7 forms an air seal which at once prevents the salt solution from Iflowing back into the fan casing, this however being obviously impossible while the fan is in motion. Should the air be discharged into the tank 5 Without the use of the inverted U-shaped pipe 7 the full weight 85 of the solution an ice contained withinrthe tank 5 Would resist the passage of air from the fan and would require a force' greatly in excess of that used with the present construction in order to direct the air into the tank. Should the speed of the fan slackeu to any extent the discharge of the fluid back through the pipe and into the fan casing would be inevitable.

Importance is attached to the fact that the caps 12 are cone-shaped, because they thus deilect the air current directly into the outlet and thus avoid the violent contact and friction which would be produced by forcing the air against surfaces disposed at right angles to the direction of movement of the air currents.

Having thus described the invention what is claimed is 1. A device of the class described including 105 a plurality of tanks, one of which is adapted to contain a brine solution and the other salted ice, a U shaped pipe disposed within the brine tank and provided With an upwardly extendingnozzle, a conductor con- 110 necting the brine and ice-receiving `tanks, and means operatively connected with the U shaped pi e for forcing a current of air throu h bot of said tanks.

2.' device of the class described includ- 115 ing a plurality of tanks, one of which is adapted to contain a brine solution and the other a quantity of salted ice, a Ushaped pipe disosed within the brine tank and having oneeg thereof bent upwardly to form a dis- `tank, and means operatively connected with the U shaped pipe or forcing a current of air through both of said tanks.

3. A device of the class described includ-- ing a plurality of tanks, one of which is adapted to contain a brine solution and the other a quantity of ice, a U shaped pipe discharging f into the brine tank and having one leg thereof bent upwardly to form a discharge nozzle, a deflector carried by and spaced from the discharge nozzle, a screen forming a housing for the 4deflector, a conductor secured to the upper end of the brine tank and discharging at the lower end of the ice. tank, a discharge pipe communicating with the interior of the ice tank, anda fan connected with the U shaped ipe for forcing a current of air throu'h iioth of said tanks.

4. device of the class `described including a plurality of tanks, one of which is ada )ted to contain a brine solution and the ot 1er a quantity of salted ice, a U shaped pi e discharging Within one of said tanks and aving 'one end thereof connected with asource of air supply and its opposite end bent upwardly to form a discharge nozzle, a deflector carried by and separated from the discharge nozzle, a conical shaped screen forming a housing for the deflector, a conductor having one end thereof connected with the upper end of the brine tank and its opposite end extended to the bottom of the ice tank and its terminal bent upwardly to form a discharge nozzle, a defiector disposed above the discharge nozzle of the brine tank, a screen forming a housing for the last mentioned defiector, a discharge pipe leading from the u per end of the ice tank, a fan connected Wit the U shaped pipe for forcing a current of air through both of said tanks, and a valve for controlling the fiow of air through .said tanks.

5. A device of the class described including a plurality of tanks, one of which is adapted to contain a brine solution and the other a quantity of salted ice, conical sha ed caps forming closures for the upper en s of the tanks, an inverted U shaped ipe discharging within the brine tank and iaving one leg thereof operatively connected with a source of air supplyand its oppfosite end bent up- Wardly at the center of said tank to form a discharge nozzle, a defiector carried by and spaced from the discharge nozzle, a conical s raped screen forming a housing for the deflector and having its lower edge reinforced and arranged to bear against the side-Walls of said tank at the' bottoni thereof, a conductor having one end thereof extended through the conical cap of the brine tank and its opposite end disposed Within the ice tank with its terminal bearing against the bottoni of said ice tank and bent upwardly to forni a discharge nozzle, a deflector arranged above said discharge nozzle, a conical screen surrounding the defleetor of the ice tank, a discharge pipe leading from the conical cap of the ice tank, a valve for controlling the supply of air to said tanks, and a drain cock conimunicating with the interior of each tank at the bottoni thereof.

6. A device of the class described including a plurality of tanks, one of which-is adapted to contain a brine solution and the other a quantit of salted ice, conical shaped caps forming c osures for the upper ends of the tanks, an inverted U sha ed pi e discharging within the brine tank and aving one leg thereofl operatively connected with a` -1 CHARLES F. MAR TIN.

Witnesses:

SAM COHN, MAURICE L. ALTHEIMER. 

